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"Do no harm!" AudioQuest has been creating high-performance audio cables for more than 30 years, guided by this simple mantra. In AQ's view, the perfect cable would be one that adds nothing  no noise, no distortion  to the original signal. With its Big Sur cables, AudioQuest pursues that ideal with the aid of some high-tech materials and designs. You might not expect a joined cable this thin and lightweight to deliver such great sound. So how does AudioQuest makes it happen? It's all about the details.

Solid Perfect-Surface Copper+ (PSC+) conductors

One of the most important materials that goes into an audio cable is the metal used for its conductors  the parts of the cable that actually carry the signal. Big Sur cables feature conductors made from a material AudioQuest calls "Perfect-Surface Copper+." PSC+ starts with ultra-pure copper, formed into solid (not stranded) conductors with an astonishingly smooth surface. The end result: clean, low-distortion signal transfer for transparent sound.

Advanced cable geometry

While many cables use a single path for both the ground and shield, AudioQuest uses a design they call "double-balanced asymmetrical geometry." This design separates the ground and shield paths for clean, quiet performance.

Cold-welded "Purple Copper" connectors

Big Sur's connectors are cold-welded, rather than soldered, which eliminates a common source of distortion found in many audio cables. They're made from high-purity, gold-plated "Purple Copper," which outperforms more common connector materials where it counts  in the listening room.

This cable is equipped with dual RCA connectors at each end. Mini-to-mini and mini-to-RCA versions are also available.

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Worth the money

Upgraded to these from an older set of Monster interconnects - very noticeable improvement on sound clarity.

Pros:Well made and worth the cost when using higher end audio equipment.

Cons:My only frustration is AudioQuest marketing - the number of products with small incremental differences as the cost increases substantially makes it difficult to know the sweet spot of cost/noticeable benefit and which model to buy.

Audio Quest = Big Sur

Initially, I thought the RCA cables were so small compared to the other cables I had. However, the sound of the Audio Quest is much clearer, due to less distortion, and less static feed back. In this case, it is not the size of the cable, but the inner components of the cable that make the noticeable difference!

Auidio quest bridges and falls edition

Written By Ivan Escalante, Minneapolis, MN on Thursday, October 10, 2013

I love Audio Quest, I am a big fan of their cinnamon line of cables, using all cinnamon cables in my theater room. I discovered the new line of "bridges & falls" interconnects. They put the same amount of quality control and engineering into their low end as the do there high end end. Leta face it, many of us are not going to spend $1000 for their Dimond line HDMI cable. But most of us may splurge for many of their others, optical, subwoofer, interconnects. Great company, never had any problems. Designed and made in USA. what more to ask from them... anyway the new bridges and falls line combined both interconnects in the same line, saving them money and passing it to us the consumer. I love them, cant wait to see whats next.

Hands-on research

What's in the box?

0.6-Meter stereo RCA cable

Product Research

Features

Big Sur Series Stereo RCA Cable: The AudioQuest Big Sur
stereo RCA cable is terminated by a gold-plated male stereo RCA connectors on
each end. The AudioQuest Big Sur stereo RCA cable is available in the
following lengths.

0.6 meter (2')

1 meter (3' 4")

2 meter (6' 7")

3 meter (10')

5 meter (16' 5")

Solid Perfect-Surface Copper+ Conductors (PSC+):
Perfect-Surface Copper+ has an astonishingly smooth and pure surface.
Proprietary metal-processing technology protects the wire's surface at every
stage of drawing and fabrication. When high-purity low-oxide copper is kept as
soft, pure and smooth as possible, it becomes a wonderfully low-distortion PSC+
conductor. PSC+ is manufactured by applying the same exceptional technology to
an ultra-pure copper. The resulting sound quality is even more focused and
simply less in the way. All of Big Sur's conductors are solid. Electrical and
magnetic interaction between strands in a conventional cable is the greatest
source of distortion, often causing a somewhat dirty, harsh sound. Solid
conductors are fundamental toward achieving Big Sur's very clean sound.

Foamed-Polyethylene Insulation: Any solid material adjacent to a
conductor is actually part of an imperfect circuit. Wire insulation and circuit
board materials all absorb energy (loss). Some of this energy is stored and then
released as distortion. Big Sur uses air-filled Foamed-Polyethylene Insulation
on both conductors because air absorbs next to no energy and Polyethylene is
low-loss and has a benign distortion profile. Thanks to all the air in
Foamed-PE, it causes much less of the out-of-focus effect common to other
materials.

Double-Balanced Asymmetrical Geometry: Purposely designed for
single-ended applications, Double-Balanced Asymmetrical Geometry offers a
relatively lower impedance on the ground for a richer, and more dynamic
experience. While many single-ended cable designs use a single path for both the
ground and the shield, Double-Balanced designs separate the two for cleaner,
quieter performance.

Cold-Welded, Gold-Plated Pure "Purple-Copper" Plugs: This plug design
allows for a connection devoid of solder, which is a common source of
distortion. Because the ground shells are stamped instead of machined, the metal
can be chosen for low distortion. Purple-Copper offers a cleaner, clearer sound
than the nickel-plated or OFHC metals commonly found in competing manufacturers'
plugs.

Directional: Arrows on the connectors indicate the preferred
signal path from the source component to the input.

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